For a sustainable habitat - Saint-Gobain Glass Nordic

WASTE
Recycled Aggregates
(Wst 2)
Aim
To acknowledge and foster the use of recycled and secondary aggregates in construction, thereby reducing the demand
for virgin material.
Requirements
The amount of recycled and secondary aggregate must be over 25% (by weight or volume) of the total aggregates of the
building. Such aggregates can be either:
a. Obtained on site.
b. Obtained from waste processing site(s) within a 30km radius of the site or from a greater distance but transported by
rail or water to the construction site.
c. Secondary aggregates obtained from a non-construction post-consumer or post-industrial by-product source.
Saint-Gobain Glass contribution
To date, as no glass disassembly and reuse
supply chain exists, categories a) or b) cannot
be fulfilled. Regarding the criterion c), the
possible origins of cullet in the glass sector
need to be defined more precisely:
- “Internal” cullet: broken glass coming from
glass manufacturing, reintroduced into the
original process.
- “Pre-customer” cullet: broken glass coming
from processing, before implementing the
finished product.
1
Credit
- “Post-consumer” cullet: broken glass coming
from the end-of-life stage (renovation or
demolition), after collection, sorting and
treatment (less than 1% in Saint-Gobain’s
glass).
On average 30% of the total weight of a sheet of glass made by Saint-Gobain Glass comes from recycled internal cullet and
“pre-customer” cullet.
More than 1 500 000 tons of cullet are melted each year in our 36 furnaces. This enables:
• A reduction of 1 800 000 tons of raw materials (natural resources) consumed,
• A reduction of at least 375 000 tons of CO2 emitted, which results in a high limitation of the greenhouse effect caused by
greenhouse gas emissions (since cullet can be melted using less energy).
At European level, only 5% of end-of-life glass is now recycled in Europe ("post-consumer" recycling), and mostly as a road
embark or to produce glass wool or bottles.
Documentation available
• The declaration certifying that 30% of Saint-Gobain’s glass is made with cullet (internal and pre-consumer).
20 • BREEAM® with Saint-Gobain Glass